EP0443078B1 - Pipe-section for buried and insulated pipelines - Google Patents
Pipe-section for buried and insulated pipelines Download PDFInfo
- Publication number
- EP0443078B1 EP0443078B1 EP90111318A EP90111318A EP0443078B1 EP 0443078 B1 EP0443078 B1 EP 0443078B1 EP 90111318 A EP90111318 A EP 90111318A EP 90111318 A EP90111318 A EP 90111318A EP 0443078 B1 EP0443078 B1 EP 0443078B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipes
- medium pipes
- pipe
- insulation
- pipe section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 239000006260 foam Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000012774 insulation material Substances 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
- F16L9/19—Multi-channel pipes or pipe assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/143—Pre-insulated pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Definitions
- the invention relates to a pipeline and a pipeline section with a plurality of medium pipes according to the preamble of claim 1.
- Pipelines formed from such pipeline sections are used, for example, in district heating house connection lines in order to introduce thermal energy to the end user with the least possible losses.
- Polyurethane rigid foam is preferably used as the material for the thermal insulation between the outer protective tube made of plastic, mostly polyethylene but also made of fiber cement, and the medium tubes.
- These lines which are usually laid in the ground in a sand bed, are subject to thermal expansion, which must be compensated or otherwise absorbed, for which purpose a large number of different solutions are known.
- a plurality of medium pipes are provided therein, which are designed as pipe coils and run in an outer jacket pipe. These carrier pipes are guided to a certain extent in the jacket pipe by means of supports.
- a disadvantage of this pipeline is that it is extremely cumbersome to manufacture, because on the one hand these supports have to be fastened individually in the casing pipe and on the other hand the medium pipes have to be inserted subsequently, which at the specified lengths only achieves a spiral of the medium pipe of 20 up to 60 meters very cumbersome should be accomplished. Otherwise, this pipeline is a pipeline for the delivery of hot oil.
- EP-OS 204 113 it is proposed according to EP-OS 204 113, for example, to produce the tight connection of the medium pipes of adjacent pipe sections using a sleeve which is able to absorb thermal expansion.
- Another solution (DE-Gbm 85 22 123) provides for an axial compensator to be used in each tube rod or between two corner fixed points.
- the object of the invention is to avoid these disadvantages and to create a pipeline section of the type mentioned, which allows simple manufacture without complex machines, in which a smooth outer jacket is possible and which requires less insulation material with the same insulation effect.
- the rigid foam thermal insulation adheres to both the outside of the medium pipes 1 and 1 'and to the inner wall of the casing pipe 3.
- Such pipeline sections are prefabricated with ends 4 protruding from both the thermal insulation and the casing pipe and brought to the construction site and laid there in appropriate trenches dug in the ground, expediently in a sand bed.
- the projecting ends 4 of the medium pipes are welded to those of the adjoining line section and at the joint of the two pipe sections, usually via a spigot sleeve, a tight connection between the ends of the jacket pipes is also created.
- thermal insulation supplemented in situ. If necessary, a leak and warning system can also be integrated in a manner known per se, which signals and locates moisture penetration of the thermal insulation as a result of a leak.
- each medium pipe 1 and 1 is formed within the thermal insulation as coils.
- the coiled section of each medium pipe can, as in the example shown, extend over the entire length of the thermally insulated line section or the medium pipes could also be designed as pipe coils over only part of their course within the thermal insulation.
- the ends 4 of the medium pipes protruding from the thermal insulation layer 2, on the other hand, are straight and run parallel to the axis of the pipeline section in order to facilitate the connection to the corresponding medium pipes of the pipeline sections to be connected to it.
- the medium pipe coils of a pipeline section can be arranged in opposite directions, engaging in one another or in the same direction, in a space-saving manner with little offset.
- the arrangement and design of the medium pipes described compensates for thermal expansion, for example in the case of district heating pipes, within each individual pipe section. Due to the connection with the outer casing pipe 3 stuck in the ground via the thermal insulation material 2, the medium pipes can practically not move in the longitudinal direction of the pipe section. On the other hand, thanks to its helical shape, a certain expansion or a narrowing of the coil in the thermal insulation layer is possible when heated or when it cools down.
- the thermal expansion coefficient of the material used for the medium pipes e.g. Steel or copper, but then also the dimension of the pipes with the aim of exposing the material of the insulation layer to the least possible compression.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Pipe Accessories (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Rohrleitung sowie einen Rohrleitungsabschnitt mit mehreren Mediumrohren nach dem Oberbegriff des Anspruchs 1.The invention relates to a pipeline and a pipeline section with a plurality of medium pipes according to the preamble of
Aus solchen Rohrleitungsabschnitten gebildete Rohrleitungen werden beispielsweise bei Fernwärme-Hausanschlussleitungen verwendet, um Wärmeenergie mit möglichst geringen Verlusten an den Endverbraucher heranzuführen. Als Material für die Wärmedämmung zwischen dem äusseren Schutzrohr aus Kunststoff, meist Polyethylen aber auch aus Faserzement, und den Mediumrohren wird hierbei vorzugsweise Polyurethan-Hartschaum verwendet. Diese üblicherweise in der Erde meist in ein Sandbett verlegten Leitungen sind Wärmedehnungen unterworfen, welche kompensiert oder sonstwie aufgefangen werden müssen, zu welchem Zweck eine grosse Anzahl unterschiedlicher Lösungen bekannt sind.Pipelines formed from such pipeline sections are used, for example, in district heating house connection lines in order to introduce thermal energy to the end user with the least possible losses. Polyurethane rigid foam is preferably used as the material for the thermal insulation between the outer protective tube made of plastic, mostly polyethylene but also made of fiber cement, and the medium tubes. These lines, which are usually laid in the ground in a sand bed, are subject to thermal expansion, which must be compensated or otherwise absorbed, for which purpose a large number of different solutions are known.
In einer Rohrleitung gemäss der GB-A 2 188 394 sind darin mehrere Mediumrohre vorgesehen, welche als Rohrwendeln ausgebildet sind und in einem äusseren Mantelrohr verlaufen. Diese Mediumrohre sind dabei mittels Supporte in dem Mantelrohr gewissermassen geführt. Bei dieser Rohrleitung ist nachteilig, dass diese äusserst umständlich herstellbar ist, denn zum einen müssen diese Supporte in dem Mantelrohr einzeln befestigt werden und zum andern sind in der Folge die Mediumrohre einzuführen, was bei den angegebenen Längen zur Erzielung nur einer Spirale des Mediumrohres von 20 bis 60 Metern sehr umständlich zu bewerkstelligen sein dürfte. Im übrigen handelt es sich bei dieser Rohrleitung um eine Pipeline zur Förderung von heissem Oel.In a pipeline according to GB-A 2 188 394, a plurality of medium pipes are provided therein, which are designed as pipe coils and run in an outer jacket pipe. These carrier pipes are guided to a certain extent in the jacket pipe by means of supports. A disadvantage of this pipeline is that it is extremely cumbersome to manufacture, because on the one hand these supports have to be fastened individually in the casing pipe and on the other hand the medium pipes have to be inserted subsequently, which at the specified lengths only achieves a spiral of the medium pipe of 20 up to 60 meters very cumbersome should be accomplished. Otherwise, this pipeline is a pipeline for the delivery of hot oil.
Wenn in sich starre Rohrleitungsabschnitte zur Anwendung gelangen, wird beispielsweise nach der EP-OS 204 113 vorgeschlagen, die dichte Verbindung der Mediumrohre benachbarter Rohrleitungsabschnitte unter Verwendung einer Muffe herzustellen, welche in der Lage ist, Wärmedehnungen aufzunehmen. Eine andere Lösung (DE-Gbm 85 22 123) sieht vor, in jedem Rohrstab oder zwischen zwei Eckfestpunkten jeweils einen Axialkompensator einzusetzen.If rigid pipe sections are used, it is proposed according to EP-OS 204 113, for example, to produce the tight connection of the medium pipes of adjacent pipe sections using a sleeve which is able to absorb thermal expansion. Another solution (DE-Gbm 85 22 123) provides for an axial compensator to be used in each tube rod or between two corner fixed points.
Andere Vorschläge suchen das Problem über Rohrleitungsabschnitte mit eingebautem Dehnungsausgleich zu lösen, indem beispielsweise als Mediumrohr ein flexibles Stahlrohr eingesetzt wird, das thermische Dehnungen aufnimmt oder indem Mediumrohr und äusserer Schutzmantel sinusförmig verlegt oder als Wellrohre ausgebildet sind. Diese Ausführungen sind jedoch nur als Rohrleitungsabschnitt mit jeweils einem Mediumrohr bekannt, sodass beispielsweise für Fernwärme-Hausanschlussleitungen stets zwei parallel laufende Leitungen für Vorlauf bzw. Rücklauf verlegt werden müssen.Other proposals seek to solve the problem of pipe sections with built-in expansion compensation by For example, a flexible steel pipe is used as the medium pipe, which absorbs thermal expansions, or by laying the medium pipe and outer protective jacket sinusoidally or in the form of corrugated pipes. However, these designs are only known as a pipe section, each with a medium pipe, so that, for example, for district heating house connection lines, two parallel lines must always be laid for flow or return.
Alle vorgenannten bekannten Lösungen sind kostspielig, sei es infolge der verwendeten Materialien (Wellrohre, Kompensationsmuffen, Zwischenstege bei Doppelrohren) oder des bei der Verlegung erforderlichen Aufwandes (breite Rohrgräben, Verbindungsprobleme zwischen Stahl und Kupfer, aus verfahrenstechnischen Gründen begrenzte Fertigungslängen).All of the aforementioned known solutions are costly, be it due to the materials used (corrugated pipes, compensation sleeves, intermediate webs for double pipes) or the effort required for laying (wide pipe trenches, connection problems between steel and copper, limited production lengths due to procedural reasons).
Aufgabe der Erfindung ist es, diese Nachteile zu vermeiden und einen Rohrleitungsabschnitt der eingangs genannten Gattung zu schaffen, der eine einfache Fertigung ohne aufwendige Maschinen erlaubt, bei dem ein glatter Aussenmantel möglich ist und der bei gleichem Dämmeffekt weniger Dämmaterial benötigt.The object of the invention is to avoid these disadvantages and to create a pipeline section of the type mentioned, which allows simple manufacture without complex machines, in which a smooth outer jacket is possible and which requires less insulation material with the same insulation effect.
Diese Aufgabe wird durch eine Rohrleitung mit den Merkmalen des Kennzeichens des Anspruchs 1 gelöst.This object is achieved by a pipeline with the features of the characterizing part of
Durch diese erfindungsgemässe Ausbildung werden gegenüber den bisher bekannten Ausführungen eine ganze Reihe von Vorteilen erzielt. Zunächst ergeben sich erheblich niedrigere Systemkosten dadurch, dass für jeweils zwei Mediumrohre nur ein äusseres Mantelrohr und entsprechend für die Verbindung der Mantelrohre nur jeweils eine Muffenverbindung erforderlich sind und dass die Fertigung ohne aufwendige Maschinen auf einfache Weise erfolgen kann. Da ferner beide Mediumrohre in der gleichen Dämmschicht liegen, ist auch der Bedarf an Dämmstoff bei gleichbleibender Dämmwirkung geringer. Dann fallen aber auch niedrigere Verlegungskosten an der Baustelle an, vornehmlich geringere Tiefbaukosten.Through this inventive design, a whole series of advantages are achieved compared to the previously known designs. First of all, considerably lower system costs result from the fact that only one outer jacket pipe is required for two medium pipes and only one socket connection is required for connecting the jacket pipes, and that production can be carried out in a simple manner without complex machines. Furthermore, since both medium pipes are in the same insulation layer, there is also a need for insulation material with the same insulation effect less. Then there are also lower installation costs at the construction site, primarily lower civil engineering costs.
Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.Advantageous developments of the invention are specified in the dependent claims.
Nachfolgend wird anhand der Zeichnung ein Ausführungsbeispiel des Erfindungsgegenstandes beschrieben. Es zeigt:
- Fig. 1
- eine Stirnansicht auf einen Rohrleitungsabschnitt, und
- Fig. 2
- eine Seitenansicht dieses Rohrleitungsabschnitts.
- Fig. 1
- an end view of a pipe section, and
- Fig. 2
- a side view of this pipe section.
Dargestellt ist ein Rohrleitungsabschnitt mit zwei Mediumrohren 1 bzw. 1′, welche mit Zwischenraum von einem Mantelrohr 3, vorzugsweise aus Polyethylen oder auch aus Faserzement umschlossen sind, wobei der Zwischenraum durch eine eingeschäumte Wärmedämmung 2, vorzugsweise aus Polyurethan-Hartschaum, fugenlos und homogen ausgefüllt ist. Die Hartschaumwärmedämmung haftet sowohl an der Aussenseite der Mediumrohre 1 und 1′, als auch an der Innenwandung des Mantelrohres 3.Shown is a pipe section with two
Solche Rohrleitungsabschnitte werden vorfabriziert mit beidseits von der Wärmedämmung und dem Mantelrohr vorstehenden Enden 4 auf die Baustelle verbracht und dort in entsprechende im Erdreich ausgehobene Gräben, zweckmässig in ein Sandbett, verlegt. An der Stossstelle zweier miteinander zu verbindender Rohre werden die vorstehenden Enden 4 der Mediumrohre mit denjenigen des anschliessenden Leitungsabschnittes verschweisst und an der Stossstelle der beiden Rohrleitungsabschnitte, meist über eine Ueberschubmuffe, auch eine dichte Verbindung zwischen den Enden der Mantelrohre erstellt. Gleichzeitig wird die Wärmedämmung in situ ergänzt. Gegebenenfalls lässt sich, in an sich bekannter Weise, auch ein Leck- und Warnsystem integrieren, welches eine Durchfeuchtung der Wärmedämmung als Folge eines Lecks signalisiert und ortet.Such pipeline sections are prefabricated with
Wie aus der Fig. 2 ersichtlich sind die beiden Mediumrohre 1 und 1′ innerhalb der Wärmedämmung als Rohrwendeln ausgebildet. Der gewendelte Abschnitt jedes Mediumrohrs kann sich, wie im dargestellten Beispiel, über die ganze Länge des wärmegedämmten Leitungsabschnittes erstrecken oder die Mediumrohre könnten auch nur über einen Teil ihres Verlaufes innerhalb der Wärmedämmung als Rohrwendeln ausgebildet sein. Die aus der Wärmedämmschicht 2 vorstehenden Enden 4 der Mediumrohre sind dagegen geradlinig und verlaufen parallel zur Achse des Rohrleitungsabschnitts, um die Verbindung mit den entsprechenden Mediumrohren der daran anzuschliessenden Rohrleitungsabschnitte zu erleichtern. Hierbei ist es zweckmässig, die beiden Mediumrohre jedes Rohrleitungsabschnitts auf ihrer ganzen Länge unterschiedlich zu markieren um Verwechslungen, insbesondere bei allfällig erforderlichen Rohrkürzungen, auszuschliessen. Die Mediumrohrwendeln eines Rohrleitungsabschnitts können gegenläufig ineinander eingreifend oder gleichlaufend um wenig versetzt platzsparend angeordnet sein.As can be seen from Fig. 2, the two
Durch die beschriebene Anordnung und Ausbildung der Mediumrohre erfolgt die Kompensation von Wärmedehnungen, z.B. bei einer Fernwärmeleitung, innerhalb jedes einzelnen Leitungsrohrabschnittes. Durch den Verbund mit dem im Erdreich festsitzenden äusseren Mantelrohr 3 über das Wärmedämmaterial 2 können sich die Mediumrohre in Längsrichtung des Rohrleitungsabschnitts praktisch nicht bewegen. Dagegen ist, dank ihrem wendelförmigen Verlauf, bei Erwärmung eine gewisse Aufweitung bzw. beim Abkühlen eine Verengung der Wendel in der Wärmedämmschicht möglich.The arrangement and design of the medium pipes described compensates for thermal expansion, for example in the case of district heating pipes, within each individual pipe section. Due to the connection with the
Bei der Wahl der Steigung der Mediumrohrwendeln ist vor allem der Wärmeausdehnungskoeffizient des für die Mediumrohre verwendeten Materials, z.B. Stahl oder Kupfer, dann aber auch die Dimension der Rohre zu berücksichtigen mit dem Ziel, das Material der Dämmschicht möglichst geringen Stauchungen auszusetzen.When choosing the slope of the medium pipe coils, the thermal expansion coefficient of the material used for the medium pipes, e.g. Steel or copper, but then also the dimension of the pipes with the aim of exposing the material of the insulation layer to the least possible compression.
Claims (4)
- Tubular pipeline comprising several helicoidal medium pipes extending and guided in a tubular outer sheathing, characterized in that the pipeline is assembled from pipe sections which are destined for thermically insulated ground-buried distance pipelines, and in which extend two medium pipes (1,1′) helically wound around each other on at least part of their length and embedded and held in place in a thermically insulating foam (2) expanded in the outer sheathing (3) and filling same, the ends (4) of the medium pipes (1,1′) protruding from this insulating foam (2) and being connected at the laying spot of the pipe section to the corresponding medium pipes (1,1′) of a similarly constructed pipe section.
- Pipe section for a tubular pipeline as claimed in claim 1, comprising an outer sheathing (3), characterized in that two medium pipes (1,1′) helically wound around each other on at least on part of their length extend in the outer sheathing (3), said medium pipes (1,1′) being embedded and held in place in a thermically insulating foam (2) expanded in the outer sheathing (3) and filling same, and having their ends (4) protruding from this insulating foam (2).
- Pipe section as claimed in claim 2, characterized in that the ends (4) of the medium pipes (1,1′) protruding from the thermic insulation are straight and extend parallelly to the axis of the pipe section.
- Pipe section as claimed in claim 2 or 3, characterized in that the two medium pipes have an associated marking to allow for their distinction one from the other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH588/90A CH679797A5 (en) | 1990-02-23 | 1990-02-23 | |
| CH588/90 | 1990-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0443078A1 EP0443078A1 (en) | 1991-08-28 |
| EP0443078B1 true EP0443078B1 (en) | 1995-08-09 |
Family
ID=4190479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90111318A Revoked EP0443078B1 (en) | 1990-02-23 | 1990-06-15 | Pipe-section for buried and insulated pipelines |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0443078B1 (en) |
| AT (1) | ATE126337T1 (en) |
| CH (1) | CH679797A5 (en) |
| DE (1) | DE59009509D1 (en) |
| DK (1) | DK0443078T3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1010933A1 (en) * | 1998-12-16 | 2000-06-21 | BRUGG Rohrsysteme GmbH | Thermally insulated conduit. |
| GB2448916A (en) * | 2007-05-03 | 2008-11-05 | Verderg Engineering Ltd | Pipeline for low temperature fluids |
| DE102021133176B4 (en) | 2021-12-15 | 2024-09-05 | Brugg Rohrsystem Ag | Pipeline compensator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2531848A1 (en) * | 1975-07-16 | 1977-02-03 | Joerg Gottfrid Hei Lilljeqvist | Joint for two tubes carrying hot and cold fluid - holds tubes in compression and tension respectively prior to use |
| FR2477256A1 (en) * | 1980-02-28 | 1981-09-04 | Coplexip | FLEXIBLE TUBULAR DRIVE USED IN PARTICULAR FOR THE TRANSFER OF HIGH TEMPERATURE AND / OR HIGH PRESSURE FLUIDS AND PIPES COMPRISING SUCH A TUBULAR CONDUIT |
| GB8607393D0 (en) * | 1986-03-25 | 1986-04-30 | British Petroleum Co Plc | Subsea pipeline |
| CH678354A5 (en) * | 1988-11-05 | 1991-08-30 | Bruno Lic Rer Pol Stuedi |
-
1990
- 1990-02-23 CH CH588/90A patent/CH679797A5/de not_active IP Right Cessation
- 1990-06-15 DK DK90111318.3T patent/DK0443078T3/en not_active Application Discontinuation
- 1990-06-15 DE DE59009509T patent/DE59009509D1/en not_active Revoked
- 1990-06-15 AT AT90111318T patent/ATE126337T1/en not_active IP Right Cessation
- 1990-06-15 EP EP90111318A patent/EP0443078B1/en not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| CH679797A5 (en) | 1992-04-15 |
| ATE126337T1 (en) | 1995-08-15 |
| DE59009509D1 (en) | 1995-09-14 |
| DK0443078T3 (en) | 1995-09-18 |
| EP0443078A1 (en) | 1991-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE202008017571U1 (en) | Tubular hollow profile | |
| EP0443078B1 (en) | Pipe-section for buried and insulated pipelines | |
| EP0017254A1 (en) | Heat-insulated pipe and process for its manufacture | |
| EP0093737B1 (en) | Piping, particularly with a plurality of tubular conduits | |
| CH667507A5 (en) | BIAS FREE buried FERNWAERMELEITUNG. | |
| DE2824395A1 (en) | Polyvinylidene fluoride hot water piping for district heating system - has corrugated sections alternating with plain sections with mounting points for other members | |
| DE102008015884B4 (en) | Anti-freeze heater and method of arrangement | |
| DE19728942A1 (en) | Heated supply pipe carrying fluid | |
| DE8321728U1 (en) | PIPELINE, IN PARTICULAR MULTI-CHANNEL PIPELINE | |
| DE4017702A1 (en) | PLASTIC SHEATH PIPE | |
| DE2348657C3 (en) | Pipeline element for cryogenic fluids | |
| DE2904141A1 (en) | Hot media transport pipe - with protective plastics sheath carrying hollow ribs | |
| DE69113053T2 (en) | PRODUCTION METHOD FOR UNDERGROUND PIPELINES FROM HEAT-INSULATED CONCENTRIC TUBES AND PIPELINE AND TUBE ELEMENT THEREFOR. | |
| DE2823051B1 (en) | Thermally insulated pipe and process for its manufacture | |
| DE2900528C2 (en) | Pipeline to be laid in the ground for district heating systems | |
| DE29504127U1 (en) | System for the energy-saving transport of, in particular, geothermal heat transfer media | |
| DE3043450A1 (en) | District heating pipe - insulated by polyurethane foam in outer PVC tube with mineral wool interlayer | |
| EP3786508A1 (en) | Slotted insulating sleeve | |
| DE2250286A1 (en) | PROCEDURES FOR LAYING PIPES OR PIPES IN THE FLOOR AND PIPE USING THIS PROCEDURE | |
| DE3634340C1 (en) | Arrangement for supporting a pipeline | |
| DE1296898B (en) | Heat-insulated pipeline and elbow expansion compensators for it | |
| AT256956B (en) | Superconducting power transmission line | |
| DE3316482A1 (en) | Process for laying a pipe run comprising individual heat-insulated pipes | |
| EP0588051B1 (en) | Method for laying a heating pipe without excavation, heating pipe and devices for implementing this method | |
| AT302750B (en) | Pipeline, in particular district heating pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE DK FR GB IT NL SE |
|
| 17P | Request for examination filed |
Effective date: 19920120 |
|
| 17Q | First examination report despatched |
Effective date: 19921105 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE DK FR GB IT NL SE |
|
| REF | Corresponds to: |
Ref document number: 126337 Country of ref document: AT Date of ref document: 19950815 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 59009509 Country of ref document: DE Date of ref document: 19950914 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950821 |
|
| ET | Fr: translation filed | ||
| ITF | It: translation for a ep patent filed | ||
| PLAV | Examination of admissibility of opposition |
Free format text: ORIGINAL CODE: EPIDOS OPEX |
|
| PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19960530 Year of fee payment: 7 Ref country code: DK Payment date: 19960530 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19960605 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19960612 Year of fee payment: 7 |
|
| PLAV | Examination of admissibility of opposition |
Free format text: ORIGINAL CODE: EPIDOS OPEX |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19960618 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19960620 Year of fee payment: 7 |
|
| 26 | Opposition filed |
Opponent name: BRUGG ROHRSYSTEME GMBH Effective date: 19960508 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19960830 Year of fee payment: 7 |
|
| NLR1 | Nl: opposition has been filed with the epo |
Opponent name: BRUGG ROHRSYSTEME GMBH |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| RDAH | Patent revoked |
Free format text: ORIGINAL CODE: EPIDOS REVO |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
| RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
| 27W | Patent revoked |
Effective date: 19970630 |
|
| GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 970630 |
|
| NLR2 | Nl: decision of opposition |